B 



Figure 19-1. Predation tank and inflow funnel (A) and (B) 

 Observation Bench, front and side view (normally covered 



with black plastic). 



Thermal Shock Procedures 



Larval Menidia menidia were transferred in 100 ml polypropylene beakers 

 with a horizontal slit 1 cm x 2 cm wide cut 1 cm above the bottom, and 

 covered with 240 u nylon screening. Larvae were placed into the beakers in 

 groups of 10, four hours prior to a test and maintained at ambient water 

 temperature (20.5 ± 0.7°C). For the shock tests, a seawater bath was preheated 



292 



